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`        The lines 3x –4y + 4 = 0 and 6x –8y –7 = 0 are tangents to the same circle. The radius of the circle is____________________________________________`
2 years ago

Anshuman Chaurasia
26 Points
```							On taking 2 common from the equation of second line it is clearly visible that both the tangents are parallel to each other, thus we can safely say that the perpendicular distance between the two lines is equal to the diameter of the circle.Thus, using the formula of distance b/w two parallel lines,D= |c1-c2|/√(a^2+b^2)On applying values,D=3/2 So radius will be R=3/4
```
2 years ago
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• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions